mountainous

M3O1U1N1T1A1I1N1O1U1S1
UK/ˈmaʊn.tɪ.nəs/US/ˈmaʊn.tə.nəs/US[ˈmæʊn.tn̩.əs]US[-ʔn̩-]

adjective

Having many mountains; characterized by mountains; of the nature of a mountain; rough (terrain); rocky.

Less commonScrabble 13

Meanings

adjectivemountainous (comparative more mountainous, superlative most mountainous)

comparative more mountainous · superlative most mountainous

  1. Having many mountains; characterized by mountains; of the nature of a mountain; rough (terrain); rocky.

    The mountainous nature of Norway has always been a serious obstacle to the development of railways, and although some 2,700 route miles are now open for traffic, several schemes have yet to be completed.

    1956 April, H. A. Vallance, “To Oslo via Stavanger”, in Railway Magazine, page 213
    2 more examples

    [Water vapour bubbles] hit againſt the ſides of the more eminent and Mountainous Places, of the Globe, and by this Concuſſion are condenſed, and thus become heavier than the Air they ſvvom in, and ſo gleet dovvn the rocky Caverns of theſe Mountains, […]

    1705, George Cheyne, “Of the Existence of a Deity”, in Philosophical Principles of Natural Religion: […], London: […] George Strahan […], →OCLC, § XXIX, page 184

    While the physical and human toll now is likely to be lower, the mountainous terrain and dispersed population make the response to Helene tough to manage and could slow the transition to a recovery phase, after power and other services are restored.

    2024 October 1, Simon Montlake, “In mountainous North Carolina, residents are the first responders after Hurricane Helene”, in The Christian Science Monitor, archived from the original on 05 Oct 2024
  2. Resembling a mountain, especially in size; huge; towering.

    But the added size did not give them an advantage this time. Not when Kanter and Adams, two mountainous players, could match the Knicks’ girth with their own.

    2016 November 28, Mike Vorkunov, “Despite Flash of Rose’s Prime, Knicks Are Dazed by Westbrook and Thunder”, in The New York Times, archived from the original on 08 Nov 2020
  3. figurativelyVery difficult.

    As Brazil faced the mountainous task of completing an Olympic venue before the opening ceremony, Chinese netizens got busy molehilling a remark by a Rio construction manager about their China supplier.

    2016 August 4, “Off-hand remark in Rio chafes Chinese Net”, in Global Times, archived from the original on 07 Mar 2020
  4. obsoleteInhabiting mountains; hence, barbarous.

Synonyms & antonyms

adjectivehaving hills and crags

adjectivelike a mountain in size and impressiveness

Similar

adjectivecontaining many mountains

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latinmontem“mountain”
  2. Late Latinmontāniōsus
  3. Middle Frenchmontagneux
  4. Englishmountainous

From mountain + -ous after Middle French montagneux, from Late Latin montāniōsus, from montānia, from Latin montem (“mountain”).

Full word history & related roots →

Translations

Ancient Greek ὀρεινός
  • ὀρεινός (oreinós)having many mountains
Arabic جَبَلِيّ
  • جَبَلِيّ (jabaliyy)having many mountains
Bulgarian плани́нски
  • плани́нски (planínski)having many mountains
Catalan muntanyós
  • muntanyóshaving many mountains
Chinese Mandarin 多山的
  • 多山的 (duōshān de)having many mountains
Czech hornatý, ohromný
  • hornatýhaving many mountains
  • ohromnýresembling a mountain
  • obrovskýresembling a mountain
Danish bjergrig
  • bjergrighaving many mountains
Dutch bergachtig
  • bergachtighaving many mountains
Esperanto montara, montoza
  • montarahaving many mountains
  • montozahaving many mountains
  • montaresembling a mountain
Finnish vuoristoinen, järkälemäinen
  • vuoristoinenhaving many mountains
  • järkälemäinenresembling a mountain
  • vuorenkokoinenresembling a mountain
  • jättimäinenresembling a mountain
  • visainenvery difficult
French montagneux
  • montagneuxhaving many mountains
German bergig, gebirgig
  • bergighaving many mountains
  • gebirgighaving many mountains
Hungarian hegyes, hegyi
  • hegyeshaving many mountains
  • hegyihaving many mountains
  • hegyvidékihaving many mountains
Irish sléibhtiúil, sléibhteach
  • sléibhtiúilhaving many mountains
  • sléibhteachhaving many mountains
Italian montagnoso, montuoso
  • montagnosohaving many mountains
  • montuosohaving many mountains
Latin montōsus
  • montōsushaving many mountains
Norwegian Bokmål fjellrik
  • fjellrikhaving many mountains
Persian کوهستانی
  • کوهستانی (kuhestâni)having many mountains
Polish górzysty
  • górzystyhaving many mountains
Portuguese montanhoso
  • montanhosohaving many mountains
Russian гори́стый, гороподо́бный
  • гори́стый (gorístyj)having many mountains
  • гороподо́бный (goropodóbnyj)resembling a mountain
Scottish Gaelic beanntach
  • beanntachhaving many mountains
Slovak hornatý
  • hornatýhaving many mountains
Spanish montañoso
  • montañosohaving many mountains
Swedish bergig, fjällrik
  • bergighaving many mountains
  • fjällrikhaving many mountains
Tagalog mabundok
  • mabundokhaving many mountains
Turkish dağlık, dağsı
  • dağlıkhaving many mountains
  • dağsıresembling a mountain
  • dağımsıresembling a mountain
Ukrainian гори́стий
  • гори́стий (horýstyj)having many mountains
Welsh mynyddog
  • mynyddoghaving many mountains
Cite this entry
APA

mountainous. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/mountainous

MLA

“mountainous.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mountainous. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “mountainous,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/mountainous.

Source: mountainous on Wiktionary, CC BY-SA 4.0.